Hello akash7955,
May I know more detail about the situation you encountered?
What program were you running?
And what does 0.4GHz means? CPU or GPU?
Have you updated Windows, BIOS and drivers?
Please refer to below link for official support page
https://www.asus.com/Laptops/ASUS-VivoBook-S14-S430FN/HelpDesk_Download/
Thank you for messaging us.
Have a nice day.